Most Difficult Marathons

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Crystal Mountain Sky Marathon
 
0.0 (0 reviews)
Crystal Mountain, WA
September 16, 2017

Race Vitals

Participants: 100
Course Layout: Loop
Elevation Gain: 9,400 ft.
Difficulty Rating: 5.00
Surface: Mostly Singletrack
Certified: No

The Crystal Mountain Sky Marathon is held at Crystal Mountain Ski Resort and has 9,400' of leg-burning climbs throughout the 24 miles of technical, mountainous single track trail and 2 miles of barely drivable dirt road. The trails are in the Silver Creek drainage, on US Forest Service Land, and around the Crystal Mountain Ski Resort.

Tiger Mountain Marathon
 
0.0 (0 reviews)
Issaquah, WA
August 12, 2017

Race Vitals

Participants: New Race
Course Layout: Loop
Elevation Gain: 8,000 ft.
Difficulty Rating: 5.00
Surface: Mostly Trail/Not-Paved
Certified: No

Located near Issaquah, Tiger Mountain State Forest is a 13,745-acre working forest that includes the West Tiger Mountain Natural Resources Conservation Area. Tiger Mountain offers many recreational opportunities including hiking, mountain biking, equestrian trails, hang gliding, paragliding, and of course some of the best trail running in the area. The course is run on amazing single or double track trails and the full marathon is two loops of the half marathon course.

TARC 100
 
0.0 (0 reviews)
Westwood, MA
October 08, 2016

Race Vitals

Participants: 15
Course Layout: Loop
Elevation Gain: 8,000 ft.
Difficulty Rating: 5.00
Surface: Mostly Trail/Not-Paved
Certified: No

As part of the TARC 100 ultramarathon race, the marathon course is held in beautiful Westwood, MA on the Hale Reservation. About 20 minutes from downtown Boston, the race will be run on a 25 mile loop course: 99.9% trail, 2,500 acres of private reserve land, a cumulative vertical gain of 8,000 feet of climb and 8,000 feet of descent for a total elevation change of 16,000 feet.

Singletrack Stampede
 
0.0 (0 reviews)
Calabasas, CA
March 04, 2017

Race Vitals

Participants: 20
Course Layout: Loop
Elevation Gain: 7,700 ft.
Difficulty Rating: 5.00
Surface: Mostly Singletrack
Certified: No

95% Singletrack trails made especially for you. Half Marathon and Full Marathon distances available. Come run beside the ancient trails that were guided by Chumash Indians in the 18th century. See why the Las Virgenes Canyon Valley ~ "a valley with little water and plentiful live oaks" is not to be missed!

Pikes Peak Marathon
 
0.0 (0 reviews)
Manitou Springs, CO
August 20, 2017

Race Vitals

Participants: 700
Course Layout: Out & Back
Elevation Gain: 7,550 ft.
Difficulty Rating: 5.00
Surface: Mostly Singletrack
Certified: No

This marathon is coined as America’s Ultimate Challenge. The course is an out & back up to Pikes Peak where runners will ascends more than 7500 ft. in 13.1 miles. Don't worry though -- the way back down is almost equally as challenging as your legs attempt to recover and you still have to dodge the protruding rocks and roots of this gorgeous trail.

Squak Mountain Marathon
 
0.0 (0 reviews)
Issaquah, WA
April 08, 2017

Race Vitals

Participants: 20
Course Layout: Loop
Elevation Gain: 7,500 ft.
Difficulty Rating: 5.00
Surface: Mostly Trail/Not-Paved
Certified: No

Two laps of the half marathon route in Squak Mountain. Runners can enjoy cushy, well maintained trails, and beautiful views of the surrounding mountains. Each lap will require a 1,800' climb to the top of Squak, along with several other 300-500' hills.

H9 Dragon Marathon
 
0.0 (0 reviews)
Blairsville, GA
August 12, 2017

Race Vitals

Participants: 30
Course Layout: Loop
Elevation Gain: 7,500 ft.
Difficulty Rating: 5.00
Surface: Mostly Trail/Not-Paved
Certified: No

"Hard time on the Dragon Spine." The H9 Marathon is a relatively tough trail running challenge in the heat and humidity of Georgia. The course runs along the Coosa Trail and the Dragon-Spine of the Duncan Ridge Trail (DRT). The trails have a few flat sections but most parts of the trails are climbs and descents (some run-able, some not so run-able).

Sky Marathon
 
0.0 (0 reviews)
Eagle Point Ski Resort, UT
July 29, 2017

Race Vitals

Participants: 75
Course Layout: Loop
Elevation Gain: 7,000 ft.
Difficulty Rating: 5.00
Surface: Mostly Singletrack
Certified: No

The Sky Marathon is part of the Tushar 100 ultra-marathon and is held in the Tushar mountain range -- a hidden treasure of 12,000ft peaks, not far from Bryce Canyon. Runners will summit multiple peaks and run ridgelines among a thriving mountain goat herd and then drop down singletrack into vast, glaciated valleys spattered with abandoned mining ruins from the wild west.

Breakneck Point Trail Marathon
 
0.0 (0 reviews)
Beacon, NY
April 15, 2017

Race Vitals

Participants: 100
Course Layout: Loop
Elevation Gain: 6,500 ft.
Difficulty Rating: 5.00
Surface: Mostly Singletrack
Certified: No

Expansive vistas overlooking the rugged Hudson Valley, beautiful singletrack, creek crossings, historic ruins, a cumulative elevation gain on par with SkyRun marathons, and a few of the steepest ascents and descents of any trail race in the country. The Breakneck Point Trail Runs should offer entrants a pretty epic day of adventure on beautiful trails surrounded and supported by a great community.

Leadville Trail Marathon
 
0.0 (0 reviews)
Leadville, CO
June 17, 2017

Race Vitals

Participants: 500
Course Layout: Out & Back
Elevation Gain: 6,500 ft.
Difficulty Rating: 5.00
Surface: Mostly Trail/Not-Paved
Certified: No
The Leadville Trail Marathon is 26.2 miles of out-and-back dirt roads and single track that takes you through the historic mining district on the east side of Leadville. The course is primarily on old mining roads and trails, topping out at 13,185 feet at Mosquito Pass. This is the HIGHEST continuous pass in the country! The views will leave you breathless, if you’re not already.
Learn about Difficulty Rating

Difficulty Rating

Race Navigator created the Difficulty Rating scale to help runners quickly compare the difficulty between marathon courses. The scale is 0.0 to 5.0 with 0.0 being the easiest and 5.0 being the most difficult. A further explanation is below:

Rating Course Description
0 to 1 These courses are mostly downhill and very fast – excellent for PR/BQ’s.
1 to 2 A rating of “1” means the course is flat; closer to “2” you can expect small hills.
2 to 3 The course has moderate hills.
3 to 4 The course has substantial hills.
4 to 5 Very difficult course usually with technical terrain.

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